CN214707866U - Display device with video loop-out function - Google Patents
Display device with video loop-out function Download PDFInfo
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- CN214707866U CN214707866U CN202120797549.3U CN202120797549U CN214707866U CN 214707866 U CN214707866 U CN 214707866U CN 202120797549 U CN202120797549 U CN 202120797549U CN 214707866 U CN214707866 U CN 214707866U
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Abstract
The utility model relates to a video display field especially relates to a display device with video loop goes out function. The device comprises an image driving board card, and a power module and a video loop-out module which are respectively connected with the image driving board card; the image drive board card is provided with a VGA video signal input interface, and the video loop-out module is connected with the image drive board card through the VGA video signal input interface of the image drive board card; the video loop-out module is provided with an HDMI video signal input interface, a video processing unit for converting an HDMI video signal into a VGA video signal, a VGA video signal input interface and a VGA video signal output interface. The device not only can realize local display of the video, but also can carry out remote, high-quality and delay-free loop-out display on the video. The display modes such as local display, remote loop-out display or local and remote simultaneous display can be freely switched according to the requirements, and the applicability is strong.
Description
Technical Field
The utility model relates to a video display field especially relates to a display device with video loop goes out function.
Background
At present, most display devices have a function of displaying video signals locally, but in some special application occasions, such as ship-borne and ship-borne fields, besides displaying the video signals locally, synchronous ring-out display of the video signals at a position far away from the local is also needed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind and not only can carry out local demonstration, can carry out remote, high quality to video signal as required moreover and encircle the display device who is equipped with the video ring and go out the function that shows.
In order to solve the technical problem, the utility model provides a technical scheme does:
a display device with a video loop-out function comprises an image driving board card, and a power module and a video loop-out module which are respectively connected with the image driving board card; the image drive board card is provided with a VGA video signal input interface, and the video loop-out module is connected with the image drive board card through the VGA video signal input interface of the image drive board card; the video loop-out module is provided with an HDMI video signal input interface, a video processing unit for converting an HDMI video signal into a VGA video signal, a VGA video signal input interface and a VGA video signal output interface.
Furthermore, the image driving board card adopts a Chunreng 6710 chip, and the Chunreng 6710 chip is provided with a DDR memory module, a backlight driving module and an LVDS module.
Further, the power module comprises a voltage of +5V for supplying power to the backlight driving module, a voltage of +3.3V for supplying power to the LVDS module, a voltage of +1.8V for supplying power to the DDR memory unit, and a voltage of +1.2V for supplying power to the image driving board card.
Furthermore, the image driving board card is also provided with a USB interface, an audio interface, an OSD menu adjusting interface, an HDMI video signal input interface and/or a CVBS video signal input interface.
Furthermore, the video loop-out module is also provided with a pre-emphasis unit for processing the VGA video signal, and the pre-emphasis unit is used for improving the transmission quality of the video signal.
Further, the video processing unit adopts an MS9292 conversion chip.
Further, the device is also provided with a serial port signal level conversion module connected with the image driving board card, the serial port signal level conversion module is provided with an SIT3232 chip and an SITS485 chip, and the SIT3232 chip is used for realizing mutual conversion between TTL level and RS232 level; the SITS485 chip is used for realizing the interconversion of the RS232 level and the RS422 level.
Furthermore, the device is also provided with an SPI FLASH memory connected with the image driving board card, and the FLASH memory adopts a GD25Q32 chip.
Compared with the prior art, the utility model has the advantages of:
the device not only can realize local display of the video, but also can carry out remote, high-quality and delay-free loop-out display on the video. The display modes such as local display, remote loop-out display or local and remote simultaneous display can be freely switched according to the requirements, and the applicability is strong.
The device adopts nationwide productization control chip, chip and components and parts specification quantity proportion all reach 100%, independently controllable completely, has abundant interface simultaneously, can realize the remote control function.
Drawings
Fig. 1 is a schematic diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of embodiment 2 of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the following specific embodiments.
Example (b):
example 1
As shown in fig. 1, the present embodiment provides a display device with a video loop-out function, and the display device includes an image driving board, and a power module and a video loop-out module respectively connected to the image driving board. The image drive board card is provided with a VGA video signal input interface, and the video loop-out module is connected with the image drive board card through the VGA video signal input interface of the image drive board card; the video loop-out module is provided with an HDMI video signal input interface, a video processing unit for converting an HDMI video signal into a VGA video signal, a VGA video signal input interface and a VGA video signal output interface.
The display device can realize local display of videos and can also realize remote loop-out display of the videos. When a video signal is accessed into the device through an HDMI video signal input interface of the video loop-out module, the HDMI video signal needs to be converted into a VGA video signal through the video processing unit, and if remote loop-out display is not needed, the video signal is transmitted to the image driving board card through the VGA video signal input interface of the image driving board card and processed through the image driving board card to be displayed by the local display screen; and if the remote loop-out display is required, transmitting the video signal to a remote loop-out display screen for display through a VGA video signal output interface of the video loop-out module.
When a video signal is accessed into the device through the VGA video signal input interface, if remote loop-out display is not needed, the video signal is transmitted to the image driving board card through the VGA video signal input interface of the image driving board card and is processed by the image driving board card to be displayed by a local display screen; and if the remote loop-out display is required, transmitting the video signal to a remote display screen for display through a VGA video signal output interface of the video loop-out module.
The image driving board card adopts a Chunreng 6710 chip, the Chunreng 6710 chip is a domestic purple light chip, adopts a 22nm process technology, and has the characteristics of high integration, high performance, high expansibility and the like. The chip not only supports the scheme of different displays on the same screen, can realize the display of different partitions, supports the maximum 10-bit FULL HD LVDS screen, but also is internally provided with an FHD TCON (backlight driving module), and reduces the cost of the display screen. The chip has abundant peripheral interfaces, and is convenient for externally connecting various devices, such as an HDMI video signal input interface, a CVBS video signal input interface, a USB interface, an audio interface, a backlight control interface, an OSD menu adjusting interface and the like. When only local display is needed, the HDMI video signal and the CVBS video signal can be respectively accessed into the display device through the HDMI video signal input interface and the CVBS video signal input interface to carry out local display. The USB interface can not only extend a WIFI/LTE/Cat 1 module to realize a communication function; program upgrading of the graphic display module can be realized; the method can also be used as an interface of the USB storage device to realize the playing of the information of the USB storage device. And the backlight control interface is used for realizing the backlight control of the external display screen. The chip can be externally connected with up to 14 menu keys through the OSD menu adjusting interface according to needs, and can realize selection of external keys and switching of menu functions through an internal 12-bit ADC acquisition circuit. The chip can also support SPI NOR (Placement program), and 1Gb 1200Mhz DDR2 is built in. The peripheral devices are simple, support FHD image output, and include various advanced video processing functions such as 3D noise reduction, hybrid motion compensation and adaptive deinterlacers, direction scalar, edge/sharpness/dynamic contrast enhancement, 3D color management, etc. Various audio decoding is also supported.
The power supply module comprises a +5V voltage for supplying power to the backlight driving module, a +3.3V voltage for supplying power to the LVDS module, a +1.8V voltage for supplying power to the DDR memory unit and a +1.2V voltage for supplying power to the image driving board card. The power supply module is completely made of a domestic Shanghai Berlin chip, so that the localization of the power supply part is realized.
The video processing unit adopts an MS9292 conversion chip and can convert the HDMI video signal into a VGA video signal.
The device is also provided with a serial port signal level conversion module connected with the image drive board card, the serial port signal level conversion module is provided with an SIT3232 chip and an SITS485 chip, and the SIT3232 chip can convert TTL level into RS232 level to be used for program burning and external communication. The SITS485 chip can convert the RS232 level into the RS422 level so as to realize remote control of the display device, such as backlight adjustment, menu adjustment, etc., through a twisted pair cable, such as a network cable.
The device is also provided with an SPI FLASH memory connected with an image driving board card, and the memory adopts a GD25Q32 chip.
Example 2
As shown in fig. 2, the difference between this embodiment and embodiment 1 is that the video loop-out module is further provided with a pre-emphasis unit, where the pre-emphasis unit is configured to perform pre-emphasis processing on a VGA video signal that needs to be remotely displayed in a loop-out manner, and the pre-emphasis processing is applied to a sending end of the video signal, and according to an attenuation channel through which the video signal is going to pass, the pre-emphasis processing enhances high-frequency components of the signal in advance so as to implement remote transmission of the signal. The pre-emphasis unit is used for improving the remote transmission quality of the video signal, and can enable the current VGA video signal to complete high-quality transmission of 50m away.
The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention should be regarded as the protection scope of the present invention.
Claims (8)
1. A display device with a video loop-out function is characterized in that: the video loop-out device comprises an image driving board card, and a power module and a video loop-out module which are respectively connected with the image driving board card; the image drive board card is provided with a VGA video signal input interface, and the video loop-out module is connected with the image drive board card through the VGA video signal input interface of the image drive board card; the video loop-out module is provided with an HDMI video signal input interface, a video processing unit for converting an HDMI video signal into a VGA video signal, a VGA video signal input interface and a VGA video signal output interface.
2. The display device provided with a video loop-out function according to claim 1, wherein: the image driving board card adopts a Chunreng 6710 chip, and the Chunreng 6710 chip is provided with a DDR memory module, a backlight driving module and an LVDS module.
3. The display device provided with a video loop-out function according to claim 2, wherein: the power supply module comprises a +5V voltage for supplying power to the backlight driving module, a +3.3V voltage for supplying power to the LVDS module, a +1.8V voltage for supplying power to the DDR memory unit and a +1.2V voltage for supplying power to the image driving board card.
4. The display device provided with a video loop-out function according to claim 3, wherein: the image driving board card is also provided with a USB interface, an audio interface, an OSD menu adjusting interface, an HDMI video signal input interface and/or a CVBS video signal input interface.
5. The display device provided with a video loop-out function according to claim 1, wherein: the video loop-out module is also provided with a pre-emphasis unit for processing VGA video signals, and the pre-emphasis unit is used for improving the transmission quality of the video signals.
6. The display device provided with a video loop-out function according to claim 1, wherein: the video processing unit adopts an MS9292 conversion chip.
7. The display device provided with a video loop-out function according to claim 1, wherein: the device is also provided with a serial port signal level conversion module connected with the image driving board card, the serial port signal level conversion module is provided with an SIT3232 chip and an SITS485 chip, and the SIT3232 chip is used for realizing mutual conversion between TTL level and RS232 level; the SITS485 chip is used for realizing the interconversion of the RS232 level and the RS422 level.
8. The display device provided with a video loop-out function according to claim 1, wherein: the device is also provided with an SPI FLASH memory connected with the image driving board card, and the FLASH memory adopts a GD25Q32 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120797549.3U CN214707866U (en) | 2021-04-19 | 2021-04-19 | Display device with video loop-out function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120797549.3U CN214707866U (en) | 2021-04-19 | 2021-04-19 | Display device with video loop-out function |
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| Publication Number | Publication Date |
|---|---|
| CN214707866U true CN214707866U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120797549.3U Active CN214707866U (en) | 2021-04-19 | 2021-04-19 | Display device with video loop-out function |
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| CN (1) | CN214707866U (en) |
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2021
- 2021-04-19 CN CN202120797549.3U patent/CN214707866U/en active Active
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